Because most cryptocurrencies aren’t regulated by national governments, they’re considered alternative currencies — mediums of financial exchange that exist outside the bounds of state monetary policy.
Yes, cryptocurrencies are a medium of exchange, which can be used to make payments for online purchases. There are hundreds of online shops and retailers that accept Bitcoin and other cryptocurrencies. However, there is a catch. Both the buyer and seller should agree to accept the particular cryptocurrency for the deal. There are various search engines to find the goods and services that can be purchased using cryptocurrencies.

Cryptocurrency is formed through a process known as mining, which entails employing computer processing power to solve complex mathematical problems to earn coins. Users can also purchase the currencies from brokers, which they can then store and spend using encrypted wallets.
No matter where you buy it, cryptocurrency is a highly volatile, speculative investment. Only invest in crypto what you’re prepared to lose, and make sure you have other financial priorities in place first: save money in an emergency fund, contribute to retirement savings, and pay off any high-interest debt balances.